22553221525 has 24 divisors (see below), whose sum is σ = 28922021888. Its totient is φ = 17427960000.

The previous prime is 22553221459. The next prime is 22553221541. The reversal of 22553221525 is 52512235522.

It is a happy number.

It is not a de Polignac number, because 22553221525 - 2²³ = 22544832917 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 392380 + ... + 446170.

Almost surely, 2^22553221525 is an apocalyptic number.

22553221525 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

22553221525 is a deficient number, since it is larger than the sum of its proper divisors (6368800363).

22553221525 is a wasteful number, since it uses less digits than its factorization.

22553221525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54373 (or 54368 counting only the distinct ones).

The product of its digits is 60000, while the sum is 34.

The spelling of 22553221525 in words is "twenty-two billion, five hundred fifty-three million, two hundred twenty-one thousand, five hundred twenty-five".